Exosomes may hold the answer to treating, diagnosing developmental brain disorders
(PHYSorg.com Medicine & Health)

Like overpacked suitcases unloaded from the underbelly of a jet, molecular satchels called exosomes are continuously deployed from all cells in the body-each one brimming with an assortment of contents that another cell may unpack and use. By sending off these biological parcels, cells communicate with each other via shared proteins and genetic material.